Function cache_copy_out

adapter/micro_thread/mt_cache.cpp:191–241

}

uint32_t cache_copy_out(TRWCache* cache, void* buff, uint32_t len)
{
    if ((cache == NULL) || (cache->pool == NULL)) {
        return 0;
    }
    
    char* out_buff = (char*)buff;
    uint32_t left = len, skip_len = 0;
    TSkBuffer* item = NULL;
    TSkBuffer* tmp = NULL;
    TAILQ_FOREACH_SAFE(item, &cache->list, entry, tmp)
    {
        skip_len = (item->data_len > left) ? left : item->data_len;
        if (out_buff != NULL)
        {
            memcpy(out_buff, item->data, skip_len);
            out_buff += skip_len;
        }
        
        left -= skip_len;
        item->data_len -= skip_len;
        item->data += skip_len;
        if (item->data_len > 0)
        {
            break;
        }
  
        if (cache->count > 0) {
            cache->count--;
        }
        TAILQ_REMOVE(&cache->list, item, entry);
        free_sk_buffer(cache->pool, item);

        if (left == 0)
        {
            break;
        }
    }

    skip_len = len - left;
    if (cache->len > skip_len) 
    { 
        cache->len -= skip_len;
    }
    else
    {
        cache->len = 0;
    }

    return skip_len;
}

void cache_skip_data(TRWCache* cache, uint32_t len)
{